Convert US gallons per hour to Cubic feet per second
Convert US gallons per hour (gph) to Cubic feet per second (ft³/s) instantly and accurately.
Conversion Formula
ft³/s = gph × 3.713348765e-5
About US gallons per hour
The US gallon per hour (gph) equals 3.785411784×10⁻³/3600 ≈ 1.051×10⁻⁶ m³/s, common in oil-burner nozzle ratings, water-softener regeneration, and RV/marine-plumbing specifications. Residential oil-burner nozzles are rated in gph (e.g., 0.75 gph, 1.00 gph); a small boat bilge pump might handle 200-500 gph. 1 US gph ≈ 1.052×10⁻⁶ m³/s ≈ 3.785 L/h.
About Cubic feet per second
The cubic foot per second (ft³/s or cfs) equals 0.028316846592 m³/s, the primary unit for measuring river discharge and open-channel flow in the United States. The US Geological Survey publishes all streamflow data in cfs; irrigation water rights, flood-control gates, and dam spillway capacities are specified in cfs. The Colorado River at full natural flow is ≈22 000 cfs. 1 cfs = 0.028316846592 m³/s ≈ 28.317 L/s ≈ 448.8 US gpm.
Quick Reference Table
| US gallons per hour (gph) | Cubic feet per second (ft³/s) |
|---|---|
| 1 gph | 3.713 × 10-5 ft³/s |
| 2 gph | 7.427 × 10-5 ft³/s |
| 5 gph | 0.000185667 ft³/s |
| 10 gph | 0.000371335 ft³/s |
| 25 gph | 0.000928337 ft³/s |
| 50 gph | 0.00185667 ft³/s |
| 100 gph | 0.00371335 ft³/s |